a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux 
                                                            
                                                     
                        
                                                
                        
                        
                            a unit of luminous flux equal to the illumination produced by one lumen on a surface of one square centimetre
                                                            
                                                     
                        
                                                
                        
                        
                            A photometric light unit for very strong illumination levels. One phot is equal to 10,000 luxes.